| http://www.w3.org/ns/prov#value | - In a tool for testing sections of pipe wherein the tool is adapted to be slidably received within the pipe, an elongated mandrel having upper and lower sealing members spaced apart from each other and concentrically arranged about said mandrel; means forming a centrally located longitudinal passageway within said mandrel; said upper and lower sealing members, respectively, including means forming
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